Burglar-proof spring-lock.



M. SHEINVAN. BURGLAR FROOF SPRING 1.06K.

APPLICATION man Dic-.19.196.

entren srrrrns aren nieren.

MORRIS SHEINMAN, OF NEW YORK, N.' Y.

BURGLAR-PROOF SPRING-LOCK.

Application led December 19, 1916.

To all whom t may concern.'

`Be it known that I, MORRIS SHEINMAN, a citizen of the United States, and a resident of New York, borough of Bronx, county of New York, and State of New York, have invented certain new and useful Improvements in BurglarProof Spring'` Locks, of which the following is a full, clear, and exact description.

This invention relates to locks for doors, and has for its principal object the provision of a simple and substantially burglarproof lock adapted for use in connection with either swinging or sliding doors.

A further object of the invention is to provide a lock having a bolt casing and a keeper so constructed and arranged as to prevent operation of the lock bolt by an instrument inserted between the door and door jamb.

A further object is to provide a lock having a vertically movable bolt provided with vertically disposed keeper-engaging lugs adapted to automatically lock when the door is closed.

Another important vobject of the invention is the provision of simple means for locking the bolt against' movement by the key or knob when in either its lower locked position or its raised unlocked position.

A further important object of the invention is to provide a lock having a vertically movable bolt adapted to be actuated by the key or by the knob on the inner side of the door by turning the knob or key in either direction.

In the drawings, Figure 1 is a horizontal sectional view showing the lock applied to a door.

Fig. 2 is a rear elevation, partly in section.

Fig. 8 is a front elevation, partly in section.

Fig. 4 is a vertical transverse sectional view on the line IV-IV of Fig. Q.

Fig. 5 is'a vertical transverse sectional view on the line V-V of Fig. 2; and

Fig. 6 is a vertical transverse section on the line VI-VI of Fig. 2.

Referring to the various parts by numerals, 1 designates the keeper, preferably formed of angle iron, countersunk in the door jamb 2 and secured thereto by screws or other suitable fastening means. The keeper is provided with a pair of outwardly projecting ears 14 having vertically extending apertures 15 therethrough. The body portion of the bolt casing is preferably Specification of Letters Patent.

Patented Jan. 15, 1919.

Serial No. 137,793.

formed of an integral and substantially rectangular box-like casting 3. A portion of the inner wall of the casing is formed integrally with the top and bottom wall and the integral end wall of the body portion 3, as shown at 4 in Figs. l, 3 and 6, and lthe edge of this wall 4 is provided with an outwardly extending flange 5 adapted to seat in a recess in the edge of the door 6. A detachable plate 7 closes the opening in the inner face of the casing 3. One edge of the plate 'T is beveled and engages under the edge of the integral inner wall 4 of the casing 3, and the plate vis attached to the casing by a screw thr-aded into a lug 8 projecting from the inner face of the outer wall of the casing 3.

A vertically movable lock bolt 9 is slidably confined in the casing 3, said boltbeing guided by lugs l0 projecting from the outer wall of the casing and extending through slots 1l in the bolt. At its outer end the bolt is provided with a pair of outwardly extending arms 12 having depending keeper-engaging latch lugs 13. The lugs 15 are beveled as shown at 16 so that when the door is closed the lugs will ride up over the beveled outer ends of thefkeeper ears 14 and drop into the apertures 15 in the ears. The walls 3 and 4 of the casing are provided with apertures to permit the ears 14 of the keeper to project through both sides of the casing when the door is closed, the inner edge of the aperture in the inner wall 4 being spaced a distance from the liange 5, so

that a solid portion of said wall 4 will cover the intervening space between the adjacent edges of the door and j amb, as clearly shown at 4 in Fig. 1 of the drawing. In other words, the apertures in the bolt casing are formed to entirely lie beyond the edge of the jamb, thereby making it impossible to insert a tool between the door and jamb and engage the bolt or the interior of the lock. The solid integral end wall 3 contacts with the keeper ears 14 and prevents the breaking or bending of the latch lugs 13 by lateral pressure should a tool be applied between the door and jamb and prying pressure exerted.

The bolt 9 is normally held in its lower or locked position, as shown in full lines in Figs. 2 and 3, by means of a compression spring 17 interposed between the upper edge of the bolt and a lug 18 projecting from the wall 3 of the casing. A stem 19 extends upinto the grooves or recesses 3G. are preferably provided with longitudinal wardly from the bolt and passes freely through the spring 17 and an aperture in the lug 18. A suitable washer is preferably interposed between the end of the springand the under side of lug 18.

At the end thereof opposite the locking lugs, the bolt 9 is provided with an eXtension 20, which projects beyond the axes of the bolt operating means and is slotted at 21. rirrportion of the front face of the extension 2O is cut away to form a web 22 and a projecting portion 23. The under edgeof the projecting portion 23 is recessed to ht over the hub 24e of the two-armed boltlifting lever 25 keyed on the spindle of the door knob 2G. The outer end of the hollow spindle is preferably headed against the face of the hub 2-1 of lever 25, as shown in Fig. 4, to, permanently attach the lever to the spindle. it will be obvious that upon turning the knob 26 in either direction one arm of the lever 25 will engage one of the shoulders or projections 27 formed by the -loweredge of the projecting portion 23 on one side of the extension 2O of the bolt and lift the bolt 9 against the action of spring 17.

A sleeve 23 is rotatably mounted in an aperture in the detachable plate 7 of the lock casing. The outer end of the sleeve 28 is closed by an integral cover plate 29 the edges of which extend beyond the outer walls of the sleeve to form retaining anges for the sleeve. The hub 30 of a bolt-lifting arm 31 is` keyed on the inner end of the sleeve 2S so as to turn therewith, and the .inner end of the sleeve is headed against. the hub 39 to lock the hub on the sleeve. The bolt-lifting` arm 31 is operated by a key from the outside of thev door. I prefer to employ a lock 33 of the cylinder type. The key barrel 32 is rotatably held in the casingof the lock 33 and is provided with a flat or angularv rearward extension or connecting bar 3e having a telescopic engagement with the sleeve 23 through a correspondingly shaped slot in the cap 29. The casing of the lock 33 vis slidably mounted on a pair of rods 35 projecting from and rigidly connected with the detachable plate 7 of the casing 3. The casing of the lock 33 is recessed to form grooves 36 and shoulders 37. The outer ends of the rods 35 pass through apertures in the shoulders 37 and The rods grooves adapted to receive the ends of elampiirg` screws. By shifting the casing of the lock 33 along the rods said casing may be adjusted to bring its outer end iiush with the outer face of the door 6 and may be locked in its adjusted position by the screws 38. The lock 33 is adjusted upon the rods and secured in adjusted position before the assembled parts are applied and secured to the door, the adjustment being made in accordance with the known thickness of the door. The grooves terminate short of the outer ends of Vthe rods and suitable coil. springs 39 may be mounted on the rods to normally hold the lock casing at the limit of its outward movement. lt will be obvious that by inserting the proper key in the lock 33 and turning the key barrel -32 in either direction, the arm 31 will engage the under side of a projection 40 ou the'opposite side ofthe extension 2O of theloolt 9 uponj which is formed the projections' or shoulders 2 7 and lift the bolt to unlock the door. j

By terminating the longitudinal grooves short of the outer ends of the rods 35, the ends of said groovesform `stops or shoulders, which will be engaged .by the lower ends of the clamping screws 38 should an attempt be made to remove the` lock-casing from the key sideof thefdoor; ,In other words, there .is provided `a lock-casing adjustably secured to .therbolt-casing so that 4it `can beinserted from the bolt-casing` side of the door and cannot be removed from the key side of the door.

A latch 41, pivoted intermediate itsends on an extension 42 of the upper guide lug 10, is mounted in the casing 3, and the upper end or finger-piece thereof projects through a slot in the top wallV of the casing 3. The lowerhooked end ofthe latch 41 is'radapted to be swung beneath the adjacent endof the projection 40, when the bolt 9 is raised, to lock the bolt in raised position to prevent automatic locking of the door when the door is closed. The lower end of the latch 41 is also adapted to be swung above the adjacent end of the projection 10 when the door is locked, to prevent unlocking of the door from the outside, thus serving as anight latch. A suitable washer and a coil'spring 43 are mounted on the finger-piece of the latch 4-1 and frictionallv engage the top wall of the casing 3 to hold the latch inijtsradj usted positions. f

An important feature ofthe invention is the provision of a vertically movable bolt` having vertically disposed keeperengaging lugs or latch members, the bolt beingnormally yieldably held in its lowermost position and the latchinglugs beinga-dapted to ride up over the keeper ears and drop into the apertures therein, therebyautomatically locking the` door when the same is closed.

A kfurther important feature is the provision of simple means for preventing automatic locking of the door, when desired, and for preventing unlocking of the door from the outside'by means of a key.` V Y It will be seen also that b the construction and arrangement of the bolt casing and keeper shown and described, the adjacent edges of the door and jamb are faced with metal and the space between said edges at the inner side of the door jamb is covered by the metal wall of the bolt casing, the bolt atu this point being entirely inclosed by the four integrallycast walls of the casing. By

`this arrangement access to the bolt by means rangement is provided whereby the complete 'lock maybe handled and shipped without danger of loss of part-s. 1 This arrangement also allows of the lock-casing being inserted from the bolt-casing side of the door. The

particular construction of the sliding connections between the lock casing and the face plate and between the key barrel and its associated bolt lifter, permit adjustment of the lock casing to bring its outer faceflush` with Ythe outer face of doors of various thicknesses and securely fastens the lock-casing to the face-plate to prevent its removal-from `the key side of the door, without destroying `theoperative connection between the key 1 barrel and bolt-lifter.

lt will be further observed that by extending the end of the bolt beyond the aXes of the bolt-operating mechanisms I provide for forming on opposite sides thereof the double bolt-lifting shoulders which are each engaged separately by the lifting levers on the Vkey and knob `mechanisms and allow of the `lifting of the'. bolt by turning either one'of the lifting mechanisms in either direction. This particular construction further provides a short leverage between the bolt shoulders and the lifting levers and consequently requires a minimum exertion to operate the bolts.

Having thus described my invention, I claim as new and desire to secure by Letters Patent 1. Alock, comprising a keeper having proj ecting ears provided with vertical apertures, a bolt-casing provided with apertures adapted to receive the ears of said keeper, a vertically-slidable bolt mounted in said casing and provided with lugs adapted to engage the apertures in the keeper ears, a knob and key mechanism carried by said bolt-casing each embodying` bolt-lifting levers, said bolt being extended beyond the axes of said knob and key mechanism and provided with shoulders on each side ofsaid axes adapted to be engaged by said lifting levers to lift the bolt when operated in either direction.

2. A lock, comprising a keeper having projecting ears provided with vertical apertures, a bolt-casing provided with apertures adapted to receive the ears of said keeper, a vertically-slidable bolt mount-ed in said casing and provided with lugs adapted to engage the keeper ears and having a rearward extension formed with double shoulders on opposite sides thereof, and knob and key mechanisms carried by said bolt-casing with their axes positioned intermediate said double shoulders and embodying lifting levers positioned to engage said shoulders to lift said bolt when either said knob or key mechanism is operated in either direction.

A lock, comprising a. keeper, a boltcasing having a detachable plate on. its in ner face, a sliding bolt in `said casing, a knob and key mechanism for operating said bolt, said key mechanism embodying a pair of rods fixed to said detachable plate and each being provided with a` longitudinal groove terminating short of the outer end of the rod to form a shoulder, a cylinder lock adjustably mounted von said rods, and

`clamping screws carried by the casing of said cylinder lock and adapted to engage in said grooves to fix the cylinder lock in adjusted positions and prevent its removal from' the key side of the door.

t. A lock, comprising a keeper, a boltcasing having a detachable plate on its inner face, a sliding bolt in said casing, a knob and key mechanism for operating said bolt, said key mechanism embodying a pair of rods fixed to said detachable plate and each being provided with a longitudinal groove terminating short of the outer end of the rods to form a shoulder, a cylinder lock having recessed sides to form rod-engaging shoulders and adjustably mounted on said rods, and clamping screws carried by the casing of said cylinderlock and' adapted to engage in said grooves to iiX the cylinder lock in adjusted positions and prevent its removal from the key side of the door.

5. The combination with a door anddoor j amb, of locking devices comprising a keeper having horizontally-prejecting ears provided with vertically-extending apertures, a bolt casing having an outer wall and a portion of its inner wall formed integral with one of its end walls, alined apertures formed through said outer wall and said portion of the inner wall and inside of said end wall, said apertures adapted to receive the ears of said keeper, a verticallyslidable bolt mounted in said casing and provided with depending latch lugs adapted to enter the apertures in the keeper ears, said end wall of the casing being continuous and spaced from said depending latch lugs of the bolt and forming one closed side of said casing apertures, whereby said inner wall will engage the outside of said keeper ears and prevent a lateral movement of the lock casing and consequently straining of the bolt and its latch lugs should a prying operation be attempted.

6. The combination with a door and door jamb, of locking devices comprising a keeper having horizontally-projecting ears provided with vertically-extending apertures, a bolt casing having an outer Wall and a portion of its inner wall formed integral With one of its end Walls, alined apertures formed through said outer Wall and said portion of the inner Wall and inside of said end wall, said apertures adapted to receive the ears of said keeper, said inner Wall portion being provided With an outwardly-extending iiange to seat in a recess in the edge of the door and a solid portion between said iiange and adjacent aperture adapted to cover vthe intervening space between the door and jamb, a vertically-slidable bolt mounted in said casing and provided with depending latch lugs adapted to enterrthe apertures in the keeper ears, said end Wall of the casing being continuous and Y spaced from said depending latch lugs of the bolt and forming one closed side of said casing apertures, whereby said kinner Wall will engage the outside of said keeper' ears and prevent a lateral movement of the lock casing and consequently straining of the bolt and its latch lugs should a prying operation Vbe attempted.

'7.fA lock comprising a keeper having projecting ears provided With vertically extending apertures, a bolt casing provided with apertures adapted to receive the ears of said keeper, a vertically slidablc bolt vmounted insaid casing and provided With depending beveled lugs adapted to ride over the keeper ears and drop into the vertically extending apertures therein, said bolt havinga rearward extension formed with dou.- ble shoulders on opposite sides thereof, a

spring normally Jforcing said bolt doWn- Copies of this patent may be obtained for Wardly, and knob and key mechanisms carried by said bolt casing with their axes posiengage said shoulders to lift said bolt v against the tension of 4said spring when either said knob or key mechanism is oper- /ated in either direction. Y

S. A lock comprising a keeper having projecting ears provided With vertically extending apertures, a bolt casing providedvvith apertures adapted toreceive the ears of said keeper, a vertically slidable bolt mounted in said casing and provided VWith depending beveled lugs adapted to ride over thekeeper ears and drop into the vertically extending apertures therein, 'said bolt having a-rear- Ward extension formed with double-shoulders on opposite sides thereof, a spring normally forcing. said bolt downwardly, knob and key mechanisms carried by said bolt casing With their axes positioned intermediate said double shoulders and embodying lifting levers positioned to engage said shoulders to lift said bolt against the tension ofsaid spring When either saidknob or key mechanismvis operated in either direction, and a pivoted manually-operable nightlatch having one end adapted to alternately engage the opposite sides .of one vof the shoulders on the bolt to hold the bolt in a raised position against the tension of said spring to prevent-automatic latching when engaged with one side of said shoulder, and lock the bolt down to prevent. itsV operation Aby the key or knob Whenengaged With the other side of said shoulder. Y

This specification signed this 16th day of December, A. D. 1916.

v MORRIS SHEINMAN.

Washington, D. C. Y 

